Integrating 3D models with photography
Interested in integrating your 3D work with the real world? This might help
#
1
24-03-2003
, 10:59 PM
Moderator
Join Date: Sep 2002
Join Date: Sep 2002
Location: Plantation, Florida
Posts: 1,568
RAMPS ON PARTICLES
I need an idea of how to apply a ramp to a particle so that it becomes more transparent as it travels farther away from the emitter. Is this done in the properties or do I need a mel script for it?
Dave Baer
Professor of Digital Arts
Digital Media Arts College
Boca Raton, Florida
dbaer@dmac.edu
#
2
25-03-2003
, 01:31 PM
Moderator
Join Date: Sep 2002
Join Date: Sep 2002
Location: London, UK
Posts: 3,198
This is done in the attribute editor by clicking the Opacity button under Add Dynamic Attributes.
From the dialog that pops up choose Add Per Particle Attribute.
Now you should see an opacityPP under the Per Particle (Array) Attributes section.
Right-click on the field next to it and choose Create Ramp. A text "<- arrayMapper1.outValuePP" appears in the field.
Right click on the text and choose "<- arrayMapper1.outValuePP -> Edit Ramp".
By default the ramp is a white to black (bottom to top) gradient and is driven by the particle's age. This means that at birth the particle is completely opaque and at death it's completely transparent. Edit the ramp and see what happens...
To add more randomness you might want to change the particles lifespan to Random Range and play with the settings.
I know this wasn't exactly what you asked but if you really want the opacityPP be driven by the distance travelled you'd need to write a per particle runtime expression which could get a bit involved (but not impossible)...
Hope this helps...
Last edited by kbrown; 25-03-2003 at 01:36 PM.
#
3
25-03-2003
, 03:11 PM
Moderator
Join Date: Sep 2002
Join Date: Sep 2002
Location: Plantation, Florida
Posts: 1,568
I remember that method. I used it in school, that's why I knew to add a ramp to the particle to make it fade. I just couldn't remember the method to do it. (getting old)...
Dave Baer
Professor of Digital Arts
Digital Media Arts College
Boca Raton, Florida
dbaer@dmac.edu
#
4
25-03-2003
, 03:54 PM
Registered User
Join Date: Sep 2002
Join Date: Sep 2002
Location: Minnesota, USA
Posts: 3,709
Been out of town...
Great answers btw
Thanks!
Posting Rules Forum Rules
Similar Threads
Cloud Particles doesn't work?
by Darkmot in forum Dynamics & Special Effects replies 1 on 05-07-2012
Particles and Dynamics
by Bluethunder in forum Dynamics & Special Effects replies 12 on 24-07-2008
Rendering Particles
by TAZINLWFL in forum Maya Basics & Newbie Lounge replies 3 on 04-08-2006
Particles moving on a surface! Please Help!
by Eurofiles in forum Dynamics & Special Effects replies 4 on 31-07-2006
Particles moving on a surface! Please Help!
by Eurofiles in forum Work In Progress replies 1 on 28-07-2006
Topics
Free Courses
Full Courses
VFX News
How computer animation was used 30 years ago to make a Roger Rabbit short
On 2022-07-18 14:30:13
Sneak peek at Houdini 19.5
On 2022-07-18 14:17:59
VFX Breakdown The Man Who Fell To Earth
On 2022-07-15 13:14:36
Resident Evil - Teaser Trailer
On 2022-05-13 13:52:25
New cloud modeling nodes for Bifrost
On 2022-05-02 20:24:13
MPC Showreel 2022
On 2022-04-13 16:02:13